stand by

Short definition from Wiktionary

Verb

1. 1
   To wait in expectation of some event; to be ready.
2. 2
   To remain loyal or faithful to.
3. 3
   To support; to continue to support despite things being bad.
4. 4
   To do nothing. To be inactive in a situation.

Noun

1. 1
   Alternative form of standby.